Every jujutsu sorcerer carries damage. They all have to find ways to carry on, to do the job, to protect people. He doesn't regret it because it carried far more meaning than making rich people richer (or poorer).

"Lets try this place," Nanami motions to a place offering noodles. It clearly has a mix of Asian specialties, but that includes Japanese. In a place where people come from worlds without a Japan at all, he's hardly offended by the mix.